Compare the ph of 0.1 m na2co3 and 0.1 m nahco3. select the statements that explain the difference. na2co3 is a stronger base. nahco3 is a stronger base. na2co3 puts more oh- ion into solution.

na2co3 is a stronger base

na2co3 puts more oh- ion into solution

Explanation:

Step 1: Calculate the pH of 0.1 M Na2CO3

Kb value for Na2CO3 = 2.1 * 10⁻⁴

Set up an ICE table

          CO_{3}^{2-}  + H_{2} O ------HCO_{3}^{-}  + OH^{-} \\[/tex]

I           0.1                    -                             -               -

C         -x                                                +x                   +x

E       (0.1-x)                                            x                      x

Step 2: Calculate pH of 0.1M NaHCO3

NaHCO3 is amphiprotic i,e it acts as an acid and base

For amphiprotic systems:

Conclusion:

pH of 0.1 M Na2CO3 = 11.66

pH of 0.1 M NaHCO3 = 8.33

Higher the pH , more basic the solution. Hence, Na2CO3 is a stronger base than NaHCO3

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